I was graciously received by Shirley Wu, who gave me the grand tour, and various members of the 23andMe science team (especially Nick Eriksson and Tom Do) then uncomplainingly put up with my questions for what must have seemed like hours. The visit reinforced my overall impression of the company: this is a group of very smart people working with an increasingly impressive customer data-set on some seriously interesting problems. Their recently announced discovery of two novel genetic regions associated with Parkinson’s disease (due for publication in the near future) is a taste of what’s to come.